LEAD – 6P14
Electrons: 82 Neutrons: 125
Protons: 82 Atomic Mass: 207.2
Melting point: 327.6º C
Lead is a basic group element with symbol “Pb”
and atomic number 82.
Derives from Latin word plumbum
Lead is a soft, malleable poor metal.
It is also counted as a heavy metal.
A soft blue-grey metal
Lead, when exposed to air, turns to a dull, gray
Found in a natural environment.
Labeled as a “post-transition metal”
Still used in consumer products.
Such as paint and gasoline
Lead has been commonly used for thousands
of years because it is widespread, easy to
extract and easy to work with.
The Romans had the largest lead mining
economy in history.
Lead’s symbol “Pb” is an abbreviation of its
Latin name “plumbum” for soft metals.
Unfortunately, no one knows who discovered
There is evidence that the first discovery of
lead was 9,000 years ago.
How does lead get into the
Deterioration of lead-based paint
Lead mines or smelters
How are people exposed to
Dust, paint, and/or soil
Contaminated food, water, or alcohol
Some imported home remedies and
Lead in home environments:
Lead in dust
• Pre-1978 homes with deteriorated leaded paint
• Children at greatest risk
• Most exposure through leaded dust in home
How are people exposed to lead in
Swallowing lead dust
Breathing contaminated air
Lead contacting skin
Workers can expose
their families if they
bring lead home on
their clothes or skin
What jobs involve lead?
Lead in drinking water
Lead can enter water by leaching from
Boiling does not get rid of lead
Running cold water before
use may reduce exposure
Lead in commercial products
Lead is still used in products such as:
Imported or older pre-
Lead in food products
Food or beverages may be contaminated
Effects of lead
No known threshold for effects of lead
Affects all organ systems
Developmental neurologic effects
Affects fetal viability, and fetal and early
Maternal lead may affect child’s neurologic